Strap for Seamaster Bullhead Co-Axial Chronograph Rio 2016

The lug width of the Seamaster Bullhead 522.12.43.50.04.001 is 22mm. This width is specific to the model and not interchangeable with 20mm or 24mm straps. You can verify it by measuring the distance between the spring bars (metal pins) that connect the strap to the case.

For a chronograph of this caliber, we recommend vegetable-tanned alligator for formal elegance, Italian calf for daily comfort, or NATO and rubber to maintain the sporty-avionic aesthetic. The choice depends on your use: office, sports, or diving. Casati Milano atelier creates bespoke 22mm straps with personally selected hides.

Straps for the Bullhead 522.12.43.50.04.001 are secured via spring bars (standard pin lugs). Using a spring bar removal tool, push the pin laterally and extract it from its seat. Insert the new strap by aligning the holes and reinsert the pin until it clicks into place. If you prefer, Casati Milano atelier offers strap changes by appointment.

Yes, the Bullhead 522.12.43.50.04.001 accepts any aftermarket strap with 22mm lug width and standard spring bars. On milanostraps.it you will find complete collections of 22mm straps in alligator, calf, shell cordovan, NATO and rubber, all compatible and customizable with initials and stitching thread choice.

A quality leather strap – such as vegetable-tanned alligator or Italian calf – lasts on average 3-5 years with regular use, provided periodic maintenance (cleaning, drying, occasional hydrophobic treatment). Vulcanized rubber has similar durability but requires less care. Casati Milano straps include an 18-month warranty and are easily replaceable to ensure longevity of your investment.